Barbed fencing-strip



(No Model.)

W. E. BROGK.

BARBED FENCING STRIP. No. 305,282. Patented Sept. 16, 1884.

\VILLIAM E. BROOK, OF NEV YORK, N. Y., ASSIGNOB TO THE VASHBUR-N 8s MOENMANUFACTURING COMPANY, OF VVOROESTER, MASSACHUSETTS.

BARBED FENCING-STRIP.

SPECIFICATION forming part of Letters Patent No. 305,282, datedSeptember 16, 1884.

Application filed December 17, 1881. (No model.)

I all whom; it may concern:

Be it known that I, WILLIAM E.- BROCK, of New York city, in the countyand State of New-York, have invented certain new and useful Improvementsin Barbcd-Metal-Strip Fencing; and I do hereby declare that thefollowing is a full, clear, and exact description of thesaine, referencebeing had to the accompanying drawings, forming a part of IO thisspecification, in which- Figure 1 represents a section of my improvedbarbed fencing when completed, ready for use. Fig. 2 represents a sideview of a section of the main metallic-strip material used in themanufacture of the barbed fencing represented in Fig. 1. 'Fig. 3represents a side View of the barbed fencing after it has beencompleted, ready for the twisting operation. Fig. 4 represents, upon anenlarged scale, a section on line a I), Fig. 3, looking in the directionof arrow 1 of same figure. Fig. 5 represents, upon an enlarged scale, asec tion on line 0 d, Fig. 3, looking in the direction ofarrow 2 of samefigure; and Fig. 6

represents, upon an enlarged scale, a side View of one of the barbs, aswill be hereinaf ter more fully described.

To enable those skilled in the art to which my invention belongs to makeand use the 0 same, I will proceed to describe it more in detail.

In the drawings, the part A represents the main metal strip, which isquite thin. A side view of a section of this strip is shown in Fig.

2. In the operation of manufacture the edges B B of this strip are bentup or folded together, as fully indicated in Figs. 3, 4L, and 5 of thedrawings, and the triangular sheetmetal barbs D are then insertedbetween the 4c. folded edgcsB B of said strip A, the base E of each barbresting upon the bottom of the strip A, as indicated by dotted lines,Figs. 1 I and 3, and full lines, Fig. -l. 1

In the operation of manufacture I prefer to compress the folded edges BB between the barbs, as shown in Fig. 5, before the strip is run throughthe bath of zinc in the galvaniz iug process. As before stated, afterthe barbs D have been placed in position in the folded strip A, thebarb-strip is run through a bath of molten zinc, thereby securelyuniting the folded edges B B of'the strip A, as well as the barbs D inposition between the folded edges B B. The barbed strip shown in Fig. 3,after passing through the galvanizing operation, is subject to atwisting operation, whereby the barb-points F of the barb-piece. D areleft standing in different directions. The twisting operation may beperformed be fore the fencing is galvanized, if preferred.

In the manufacture, if preferred, the barbs D can be cut and slippedinto position as the strip A is gradually folded, the whole operationbeing performed by automatic maohinery.

In my application of even date herewith, serially numbered 48,110, Ihave shown, described, and claimed a barbed-strip fencing,

consisting of a metal strip folded longitudi= nally upon a barbed strip,the two being twisted spirally together, and I wish it to be understoodthat such construction is not covered by the present application.

Having described my improvements in barbed-mctal-strip fencing, what Iclaim 7 5 therein as new and of my invention, and desire to secure byLetters Patent, as an improved article of manufacture, is

A metal fencing comprising a thin metal strip having a singlelongitudinal fold and So triangular barbs inserted in said fold, thestrip being twisted, substantially as described.

\ IVILLIAM E. BllOfK.

Witnesses:

Gno. T. PINCKNEY, HAROLD SERRELL.

